Open MPI logo

Hardware Locality Users' Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Hardware Locality Users mailing list

Subject: Re: [hwloc-users] No caches or hiearchy on RHEL 4.7 or 4.8
From: Dan Eaton (daniel.eaton_at_[hidden])
Date: 2010-01-28 13:34:46


I just tried that but the output is the same. As Samuel pointed out, it looks like /proc/cpuinfo is totally bogus for this kernel. Comparing it with what it "should" be emitting (according to, it doesn't report more than one under "cpu cores", and core id is always 255!

Kind regards,

-----Original Message-----
From: hwloc-users-bounces_at_[hidden] [mailto:hwloc-users-bounces_at_[hidden]] On Behalf Of Brice Goglin
Sent: Thursday, January 28, 2010 11:32 AM
To: Hardware locality user list
Subject: Re: [hwloc-users] No caches or hiearchy on RHEL 4.7 or 4.8

Dan Eaton wrote:
> I couldn't compile trunk (rather, failed because it requires Autoconf > 2.63), so I just pulled the nightly build hwloc-1.0a1r1682 and applied the patch there. Does that sound reasonable?


By the way, there's an undocumented environment variable to force hwloc
to read /proc/cpuinfo instead of sysfs. Try setting
HWLOC_LINUX_USE_CPUINFO=1 before running the old lstopo (without the x86
backend), it might be better.


hwloc-users mailing list